on video Make an ADVANCED tester from a transformer like

 Make an ADVANCED tester from a transformer like

In this video I'll show how i built a 5,000 volt power supply. A 48V DC supply inside the box powers a ZVS driver that runs a transformer at 50 kHz. A 200 pF capacitor is placed in series with the transformer output as a power limiter, causing an output impedance of 16 kΩ. This is a really versatile supply, because i have relatively high voltage, high frequency, and a high power output from the transformer (depending on the series capacitor, it could probably output close to 600W safely).

One of the biggest snags of this project was getting the ferrite chokes at the input of the ZVS driver to cooperate. If you have the wrong core material, or the chokes are under-spec'd, the driver will be unstable and go into "latch up" where one of the MOSFETs gets stuck ON, and quickly destroys itself from the heat of short circuiting.

Another issue i discovered was that it's not a good idea to have a transformer over 5kV without having the secondary submerged/potted in some sort of insulator to keep the high voltage from jumping from one winding to another (or to other objects).

 Make an ADVANCED tester from a transformer like

In this video I'll show how i built a 5,000 volt power supply. A 48V DC supply inside the box powers a ZVS driver that runs a transformer at 50 kHz. A 200 pF capacitor is placed in series with the transformer output as a power limiter, causing an output impedance of 16 kΩ. This is a really versatile supply, because i have relatively high voltage, high frequency, and a high power output from the transformer (depending on the series capacitor, it could probably output close to 600W safely).

One of the biggest snags of this project was getting the ferrite chokes at the input of the ZVS driver to cooperate. If you have the wrong core material, or the chokes are under-spec'd, the driver will be unstable and go into "latch up" where one of the MOSFETs gets stuck ON, and quickly destroys itself from the heat of short circuiting.

Another issue i discovered was that it's not a good idea to have a transformer over 5kV without having the secondary submerged/potted in some sort of insulator to keep the high voltage from jumping from one winding to another (or to other objects).